Music-leaf turner



WAJAL STACKPOLE.

- MUSIC L EKF' TURNER. APPLICATION FILE-DAM. 19. 1918.

' 1,315,999; Patented Sept; 16, 1919.

2 SHEETSSHEET I.

w. A. STACKPOLE.

MUSIC LEAF TURNER.

APPLICATION FILED APR. 19. SIB- Patented Sept. 16, 1919.

v I 2 SHEETS-SHEET 2- j leg )0// 7 //7 J l ri 1 C 7 /5 g I A6 1 3 UNITED STATES P-ATENT OFFICE.

WESLEY A. STAGKPOLE, OF MONROE, WASHINGTON.

MUSIC-LEAF TURNER.

Specification of Letters Patent.

Patented Sept. 16, 1919.

Application filed April 19, 1918. Serial 11 0. 229,550.

To all whom it may concern Be it known that I, WVEsLEY A. STACK- POLE, a citizen of the United States, residing at Monroe, in the county of Snohomish, State of Washington, have invented a new and useful Music-Leaf Turner; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art towhich it appertains to make and use the same.

This invention relates to an improved music leaf turner, and one of the objects of the invention is to provide a simple, efficient and practical device of this kind comprising improved feature of construction and one which may be manufactured at a small cost and sold at a reasonable profit.

A further object of the invention is to provide an improved music leaf turner having a plurality of leaf turning members having parts arranged in stepped relation and an intermittently movable slide, adapted to be moved to disengage the stepped arranged parts one at a time, whereby the music leaf turners are released for turning the sheets of music, one at a time.

A further object of the invention is to provide a guide for said slide, and improved means for intermittingly moving the slide.

In practical fields the details of construction'may necessitate alterations falling within the scope of what is claimed.

The invention comprises further features and combination of parts as hereinafter set forth shown in the drawings and claimed.

In the drawings Figure 1 is a view in elevation of the improved music leaf turner constructed in accordance with the invention.

Fig. 2 is a plan view.

Fig. 3 is a sectional view on line 3-3 of Fig. 1.

plates, either constructed of wood or metal,

hingedly united as at 3, and designed to support a book of music consisting of several leaves. These members 1 and 2 may be folded back against each other, in order to utilize but a small space when stored. The

member or plate 2 has riveted thereto ad-- jacent its lower and upper edges by means of the rivets 4: angle plates 5. These angle plates 5 overlie the member or plate 1, in fact the angle plates extend across the meeting edges or joined edges of the plates 1 and 2. Music leaf turning members 6, 7 and 8 are provided. Any number of such members may be employed other than the three shown. These leaf turning members are Ushaped, and their vertical parts 9 are bent upon themselves to form loops 10, 11 and 12, the loop 11 is slightly longer than the loop 10, and the loop 12 is a little longer than the loop 11, and owing to these variations in the lengths of the loops, their end portions are in stepped relation. The arms 18 terminate in coil springs 14, the terminals 15 of which are anchored in suitable apertures of the lateral flanges 16 of the angle plates 5. In fact the terminals 15 pass through the lateral flanges 16, and are bent toward the flanges of the plates 5 which are secured to the member 2 and have their extremities extending partially into the flanges which are secured to the member 2. By merging the arms 13 into said coil springs, the leaf turning members are under tension, so that as each sheet of music is read, its leaf turning member under the tension of the coil springs will automatically turn the leaf. The plate or member 2 hasan extension 17, and secured on theface ofthis extension'by rivets or the like 18 is an arched casing 19. The rivets or screws 18 pass through the flanges 20 of the side walls of the arch casing. A portion of the arch of the casing 19 is cut away, in fact provided with a slot 21, and mounted in guides 22 near the arch of the casing 19 is a slide 23, one edge of which is-provided with rack teeth 24. The end edge portion 25 of the slide overlies the outermost loop 10, and since the other loops 11 and 12 are back of 10, all three leaf turning members 6, 7 and 8 are held in the position shown in Fig. 1 adjacent the plate 2 against the actions of the coil springs 14. The casing 19 has a downwardly extending ear 26 provided with a pin 27, and mounted upon the pin below the ear 26 is a gear 28. This pin 27 is headed on both ends as at 29 and 30. The

gear 28 extends partially through an opening, 31.-

the bottom of the housing creasing 19,, whcrcb y its teeth may mesh with the rack teeth 24. The gear 28 has a lateral extending annular flange 32, provided with ratchet teeth 33. A lever 34 is pivoted at 35 to the bottom wall of the casing 19. This lever is angular, in fact its arms 36 and 37 extend at an obtuse angle. The arm 36 has a push button 38, and the arm 37 has a awl 39 provided with a weighted end 40. he pawl 39 is pivoted at 41 to the arm 37 there being a limiting lug or pin 42, to limit the pawl in its retrogression. The pointed end of the pawl 39 engages the ratchet teeth of the flange 32. Projecting downwardly from the bottom of the casing 19 are lugs 43 and 44, and threaded in the lugs are set screws 45 and 46, which are adjusted, to limit the lever 34 in its rocking movement, and owing to the pawl being weighted, the arm 37 of the lever 34 normally engages the end of the set screw 46. However, these set screws 45 and 46 are set to permit such movement of the lever 34 as to enable the pawl to move the ratchet sufficiently, for instance, one or two teeth, whereby the slide 23 may be moved intermittently, to release the loops 10, 11 and 12 one at a time. To release the loops pressure is applied to the thumb piece 38, the arm 36 of the lever 34 will then contact with the set screw 45, the pawl will impart movement to the ratchet and the gear. Such movement to the ratchet and the gear will move the slide in the direction of the arrow a, which will release the loop 10. lVhen the loop 10 is released and since there is a music leaf resting upon the leaf turning member 6, the leaf will be turned under the action of the springs of the turning member 6. Each loop is released in a similar manner. The pawl in order that it may at all times engage the teeth of the ratchet, is provided with an enlargement 47. A pin 48 extends outwardly from the slide 23 so that the slide may be reset.

The releasing of the pawl 39 from engagement with the ratchet teeth, when all of the loops have been released is accomplished by Copies of this patent may be obtained for five cents each, by addressing the hand. A slight movement of the plate 23, in the direction of the arrow a, shown in Fig. 4, will allow the end 47 of the pawl 39 to come out of engagement with the ratchet teeth, when the weighted end 40 thereof is raised upwardly by the finger of the operator.

The invention having been set forth what is claimed as new and useful is In a music leaf turner, a support, a plurality of spring tensioned leaf turning members mounted on the support and provided with loops having their terminals arranged in stepped relations, a device overlying the terminals and designed to be actuated intermittently to disengage and release the loops one at a time, a housing having guides for said device, means for imparting intermittent motion to the device, said means comprising rack teeth on the device, a gear engaging said teeth, said gear having an annular flange provided with ratchet teeth, said ratchet teeth being at right anles to the gear teeth, an angular lever pivoted to the lions ing and located below the ratchet teeth on the gear, one arm of said angular lever having a weighted pawl cooperating with the ratchet teeth to impart intermittent motion to the gear, the other arm of the angular lever being adapted to be engaged by the finger of the operator for rocking the angular lever, set screws threaded in lugs on the housing and so positioned as to be engaged by the arms of the angular lever when the same is rocked, said set screws providing means whereby the rocking movement of the angular lever may be limited and the gear turned to the extent only as limited by the set screws.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WESLEY A. STACKPOLE.

Witnesses EUGENE LARIN, A. J. BLAIR.

Commissioner of Eaten/6s,

Washington, I). G. 

